10µV, 0.1µV/˚C, High-Precision, Low-Power Operational Amplifier

The OPAx277 series of precision

operational amplifiers replace the industry standard OP-177. The OPAx277 devices

offer improved noise, wider output voltage swing, and are twice as fast with half

the quiescent current. Features include ultra-low offset voltage and drift, low bias

current, high common-mode rejection, and high power supply rejection.

The OPAx277 operate from ±2-V to ±18-V

supplies with excellent performance. Unlike most op amps that are specified at only

one supply voltage, the OPAx277 series is specified for real-world applications; a

single limit applies over the ±5-V (10-V) to ±15-V (30-V) supply range. High

performance is maintained as the amplifiers swing to the specified limits. Because

the initial offset voltage (±20 µV, maximum) is so low, user adjustment is usually

not required. However, the single version (OPA277) provides external trim pins for

special applications.

The OPAx277 are easy to use and free

from phase inversion and the overload problems found in some other op amps. These

devices are unity-gain stable and provide excellent dynamic behavior over a wide

range of load conditions. Dual and quad versions feature completely independent

circuitry for lowest crosstalk and freedom from interaction, even when overdriven or

overloaded.